package com.study.gupao.promotion;

/**
 * @ClassName: PromotionStrategy
 * @Description: 策略模式抽象
 * @author: Administrator
 * @Date: 2019-03-14 14:34
 */
public interface PromotionStrategy {
    /**
     * 优惠形式
     */
    void doPromotion();
}
